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Student Number 93343024
Author Yun-Sheng Ku(¥j©û¥Í)
Author's Email Address No Public.
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Department Mechanical Engineering
Year 2008
Semester 1
Degree Ph.D.
Type of Document Doctoral Dissertation
Language English
Title Optimal design of waveguide structure for broadband optical directional coupler with various weighting functions
Date of Defense 2009-01-12
Page Count 118
Keyword
  • optical directional coupler
  • weighting function
  • Abstract Under WDM system, we often need a broadband device addressing all the signals. One of the candidates is the adiabatic coupler which exhibits advantages of insensitive to polarizations, wavelengths and length of the device. The objective of the work includes two parts: the fist part defines theory ranges and processing tolerance of mismatched optical coupler (MOC). The second part is optimization waveguide structure of MOC for low the crosstalk, broadband (broad bandwidth and C+L-band) and short couplers, respectively. The results prove clearly of coupling structure that short coupler length with process tolerance is need considered in the MOC.
    Table of Content Table of Contents
    Abstract in Chinese                          I
    Abstract in English                          II
    Table of Content                          III
    List of Tables                            V
    List of Figures                          VIII
    Chapter 1. Introduction                        1
    1.1 Preface and overview                      1
    1.2 Research Motivation                      4
    1.3 Content Summary                       5
    Chapter 2. Theoretical model and Schematics diagram of MOC       8
    2.1 Theoretical model                       8
    2.2 Schematics diagram of MOC                  13
    Chapter 3. SSF, RCF, HWF, and M-HWF for broad bandwidth       15
    3.1 SSF VS. RCF                        15
    3.1.1 Theoretical calculations                 15
    3.1.2 BPM simulations for crosstalk and coupler length      16
    3.1.3 BPM simulations for structure tolerance and bandwidth   17
    3.1.4 Conclusions                      18
    3.2 HWF Vs. M-HWF                      31
    3.2.1 Theoretical calculations                  31
    3.2.2BPM simulation results and discussions            32
    3.2.3Conclusion                        34
    Chapter 4. BWF, HWF, and M-HWF for C+L-ban            45
    4.1 BWF                            45
    4.1.1 Theoretical calculations                  45
    4.1.2 BPM simulation results and discussions           46
    4.1.3 Conclusion                        50
    4.2 HWF VS. M-HWF                       56
    4.2.1 Theoretical calculations                  56
    4.2.2 Results and discussion                   57
    4.2.3 Conclusion                        60
    Chapter 5. Conclusions                        67
    References                           68
    Appendix A                             70
    Reference [1] J. S. Cook, ¡§Tapered velocity couplers,¡¨ Bell Syst. Tech. J., pp. 807-822, 1955.
    [2] A. G. Fox, ¡§Wave coupling by warped normal modes,¡¨ Bell Syst. Tech. J., pp. 823-852, 1955.
    [3] W. H. Louisell, ¡§Analysis of the single tapered mode coupler,¡¨ Bell. Syst. Tech. J., pp. 853-870, 1955.
    [4] M. G. F. Wilson and G. A. Teh, ¡§Improved tolerance in optical directional couplers,¡¨ Electron. Lett., vol. 9, pp. 453-455, 1973.
    [5] R. B. Smith, ¡§Coupling Efficiency of the tapered coupler,¡¨ Electron. Lett., vol.11, pp. 204-206, 1975.
    [6] R. B. Smith, ¡§Analytical solutions for linearly tapered directional couplers,¡¨ J. Opt. Soc. Amer., vol. 66, pp. 882-892, 1976.
    [7] M. Matsuhara and K. O. Hill, and A. Watanabe, ¡§Optical-waveguide filters: Synthesis, ¡§ J. Opt. Soc. Amer., vol. 65, pp. 804-809, 1975.
    [8] G. H. Song and W. J. Tomlinson, ¡§Fourier analysis and synthesis of adiabatic tapers in integrated optics,¡¨ J. Opt. Soc. Amer. A., vol. 9, pp. 1289-1300, 1992.
    [9] R. C. Alferness and P. S. Cross,¡¨ Filter characteristics of codirectionally coupled waveguides with weighted coupling,¡¨ IEEE, J. Quantum. Electron., vol.14, pp.843-847, 1978.
    [10] R. C. Alferness¡§optical directional couplers with weighted coupling,¡¨App. Phys. Lett., vol. 35, pp. 260-262, 1979.
    [11] A.W. Snyder, Y. Chen, D. Rowland, and D. J. Mitchell, ¡§Mismatched directional couplers,¡¨ Opt. Lett., vol.15, pp. 357-359, 1990.
    [12] D. R. Rowland, Y. Chen, and A.W. Snyder,¡¨ Tapered mismatched couplers,¡¨ J. Lightwave Technol., vol. 9, pp. 567-570, 1991.
    [13] R. R. A. Sym, ¡§The digital directional coupler: Improved design,¡¨ IEEE Photon. Technol. Lett., vol. 4, pp. 1135-1138, 1992.
    [14] H. S. Kim and R. V. Ramaswamy, ¡§Tapered, both in dimension and in index, velocity coupler: theory and experiment,¡¨ IEEE, J. Quantum Electron., vol. 29, pp. 1158-1167, 1993.
    [15] T. A. Ramadan, R. S. Scarmozzino, and R. M. Osgood, ¡¨Adiabatic couplers.:design rules and optimization,¡¨ IEEE, J. Lightwave. Technol., vol 16, pp. 277-283, 1998.
    [16] A. Syahriar, V. M. Schenider and S. Al-Bader, ¡§The Design of Mode Evolution Couplers,¡¨ J. Lightwave Technol., vol 16, pp. 1907-1914, 1998.
    [17]D. C. Montgomery, Desing and analysis of experiments, wiley, New York, 1991.
    [18] P. S. Cross and H. Kogelnik, ¡§Sidelobe suppression in corrugated-waveguide filters,¡¨ Opt. Lett., vol. 1, pp. 43-45, 1977.
    [19] H. A. Haus, Waves and Fields in Optoelectronics, Prentice- Hall, 1984.
    [20] G. R. Hadley, ¡§Transparent boundary condition for the beam propagation method,¡¨ IEEE J. Quantum Electron., vol. 28, pp. 363-370, 1992.
    [21] R. Syms and J. Cozens,¡¨ Optical guided waves and devices,¡¨ Chapter 10, 1992.
    [22] Allan W. Snyder and John D. Love,¡¨ Optical Waveguide Theory,¡¨ Chapter 12-13,18-19,27-29.
    [23] Alexander M. Kenis, Ilya Vorobeichik,¡§Non-Evanescent Adiabatic Directional Coupler,¡¨ IEEE, J. Quantum. Electron., vol.37, pp.1321-1328, 2001.
    [24] H. Yamada, T. Chu, S. Ishida and Y. Arakawa, ¡§Optical directional coupler based on Si-Wire waveguides,¡¨ IEEE Photonics Technol. Lett., vol17, 588-587, 2005.
    [25] H. Yamada, T. Chu, S. Ishida and Y. Arakawa, ¡§Si photonic wire waveguide devices ,¡¨ IEEE J. Quantum Electron., vol. 12, pp.1371-1379, 2006.
    Advisor
  • Chi-Feng Chen(³¯©_Ê°)
  • Files
  • 93343024.pdf
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    Date of Submission 2009-01-21

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